THE PRINCETON CO.

What it is: A five-minute, deep-conditioning mask formulated to deliver moisture to medium-to-thick dry hair.

Who it's for: Ideal for those with medium-to-thick hair.

What it does: Infused with antioxidant-rich argan oil and other nourishing ingredients, this rich and creamy deep conditioner hydrates while improving hair's shine, texture, elasticity and manageability.

How to use: Apply a generous amount to towel-dried hair and comb through. Leave on for 5–7 minutes then rinse thoroughly. No heat required. Use 1–2 times weekly.